Description
The data set contains grain size distributions, organic matter (OM) contents and trace metals distribution metal distribution (Fe, Zn, Cu, Cr and Pb) of seven (7) shallow cores of sediments from the Notwane Dam (southern Botswana). The cores have been collected with a push corer using PVC pipes of 5 cm diameter by a team from BIUST led by Dr. Franchi between November 2017 and February 2018. The data were collected as part of the PULA project, which aimed at understanding the immediate effect of heavy rainfall and floods on water resources in arid Botswana and their transitional hydrologic readjustment towards the dry period, and the role of these events in supporting either or both resources replenishment and contamination. Grain size profiles of the cores have been obtained by analyzing wet sediments with a laser diffraction particle size analyzer. The OM content of the sediments was obtained by measuring the loss on ignition (LOI) of bulk sediments after calcination in a muffle furnace. The sediments have been analyzed for trace metal distribution using a Microwave Plasma-Atomic Emission Spectrometer (MP-AES). The grain size distribution has allowed to pinpoint the presence of flood couplets, characterized by coarse lags followed by fine grained materials. The trace metal distribution profiles have been compared with the flood couplets to assess the entity of metal mobilization during floods and subsequent droughts.
Data type
comma-separated values (CSV)
Copyright and Open Data Licencing
This dataset is available under the terms of the open government licence
Date made available | 18 Nov 2019 |
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Publisher | NERC Environmental Information Data Centre |
Temporal coverage | 22 Nov 2017 - 19 Feb 2018 |
Funder and Grant Reference number
- Natural Environment Research Council (NERC)
Datasets
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Water resources quality data following extreme rainfall and floods in the Gaborone catchment, Upper Limpopo basis, Botswana
Comte, J. (Creator), Geris, J. (Creator) & Franchi, F. (Creator), NERC Environmental Information Data Centre, 12 Apr 2019
DOI: 10.5285/c7793128-1961-45d5-aa18-5f023116784b
Dataset
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Water resources quality data following extreme rainfall and floods in the Gaborone catchment, Upper Limpopo basin, Botswana
Comte, J. (Contributor), Geris, J. (Contributor) & Franchi, F. (Contributor), Natural Environment Research Council, 1 Jan 2019
DOI: 10.5285/c7793128-1961-45d5-aa18-5f023116784b, https://doi.org/10.5285%2Fc7793128-1961-45d5-aa18-5f023116784b
Dataset